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A280500 as a simple table

na(n)
11
20
32
40
51
63
70
80
90
104
110
120
131
142
155
160
170
180
190
200
216
220
230
240
251
263
273
287
290
300
310
320
330
342
350
368
370
380
390
400
411
420
430
444
459
460
470
480
490
500
510
520
530
540
5510
560
570
580
590
600
611
620
632
647
655
6611
670
680
690
700
710
720
730
740
750
766
770
7812
790
800
810
820
830
840
851
860
870
880
890
906
9113
920
930
940
950
960
970
980
990
1000
1012
1020
1034
1040
10514
1060
1070
1080
1090
1100
1110
1120
1131
1143
1153
1160
1173
1180
1197
12015

[1,0,2,0,1,3,0,0,0,4,0,0,1,2,5,0,0,0,0,0,6,0,0,0,
 1,3,3,7,0,0,0,0,0,2,0,8,0,0,0,0,1,0,0,4,9,0,0,0,0,
 0,0,0,0,0,10,0,0,0,0,0,1,0,2,7,5,11,0,0,0,0,0,0,0,
 0,0,6,0,12,0,0,0,0,0,0,1,0,0,0,0,6,13,0,0,0,0,0,0,
 0,0,0,2,0,4,0,14,0,0,0,0,0,0,0,1,3,3,0,3,0,7,15]